Door-buffer.



W. R. CONCIB & C. H. SMITH.

DOOR BUFFER.

APPLICATION FILED Ncv.17, 191s.

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UNTTED STATE@ PATENT OFFME- WILLIAM R. GONCIE AND CHARLES H. SMITH, OFHILLYARD, WASHINGTON.

DOOR-BUFFER.

Specification of Letters Patent.

Patented Dec. 1, 1914:.

To all 'whom it may concern Be it known that we, VILLIAM R. Concili andCHARLES H. SMITH, citizens of the United States, residing at Hillyard,in the county of Spokane and State of Vashingt0n, have invented a newand useful Door- Buffer, of which the following is a speciiication.

This invention relates to improvements in door stops.

It is one of the objects of this invention to provide a door stop with abuffer for arresting opening movement of the door and a retainer forarresting rebound closing movements which succeed the arresting movementunder the action of the buffer so as to provide means which will engagethe door on opposite sides thereof.

In order to avoid shocks and jars incident to arresting movement of adoor, I provide a buffer which offers cumulatively increasing resistanceto opening movement of the door so as to neutralize all shocks and jars.

Other features of novelty will be more fully described in connectionwith the accompanying drawing and will be more particularly pointed outin and by the appended claims.

In the drawing z-Figure 1 is a perspective view of one form of door stopembodying a form of our invention. Fig. 2 is a view thereof in sideelevation applied to a floor and illustrating a door in engagementtherewith. Fig. 3 is a perspective view of a modified form of ourinvention. Fig. l1 is a view similar te Fig. 2. showing the applicationof the form shown in Fig. 3. Fig. 5 is a sectional view on line 5-5 ofFig. 1.

Like characters of reference designate similar parts throughout thedifferent figures of the drawing.

. Referring first to the forms shown in Figs. 1, 2 and 5, l designatesthe base section or portion which is adapted to rest or be secured on afloor surface and which forms an intermediate portion of a door stopcomposed of a strip of spring metal. One end portion 2 is bent inoverhanging relation with the base portion 1 and is substantiallyparallel therewith for a limited distance as indicated at 3. Theremainder of the portion 2 normally lies at an acute angle to the baseportion 1 and its terminal end 4l is bent downwardly and backwardlyunder the inclined portion 2 but is disposed in spaced relation withrespect thereto so as to aiiford an initial resistance against openingmovement of the door, as will presently appear. In the opening movementof the door, the lower edge thereof will traverse the upper face of theinclined portion 9. and depress the saine as the door passes thereover.Depression of the portion 2 offers a slight initial resistance to thedoor but the primary initial resistance is afforded when the door passesover the end portion 5 and collapses the same upon the bent portion 4,which latter will have been forced down into engagement with base 1 sothat it will be necessary for the door to compress the bent terminalend, against the resistance thereof, in order to pass over it.Immediately after the door has passed over it the bent portion 2, whichisl the retainer, this retainer will spring up, as shown in Fig. 2, soas to arrest rebounding or return movement of the door which resultsfrom its engagement with the buffer, which we will now describe.

The remaining` end `of the strip is bent upwardly, as indicated at G,and is inclined toward the door with respect to the direction of openingmovement thereof. The terminal end 7 is bent downwardly so as to lie ina substantially vertical position and form an impact face against whichthe door will strike in flat abutting relation. This portion constitutesthe buffer of our improved stop and it will be seen that the yieldingresistance which it first offers will be supplemented by the subsequentresistance offered by part G so that the buifer will offer acumulatively increasing buifer resistance which will not only arrestopening movement of the door but which will completely neutralize allshocks and jars in the performance of such function.

'When the device of our invention is positively anchored to the floor wemay provide a screw hole 8 at one portion of the base. A screw hole 9 isdisposed near the other end of the base 1 and in order to facilitateinsei-tion of a screw thereto we provide a relatively enlarged opening10 in the parallel portion 8 which is in registry with the opening 9.

Next referring to the modified forni shown in Figs. 3 and 4, 11designates a buffer which is formed in a manner to offer a cumulativelyresisting buffer action to opening movement of the door and which isconstructed in spiral form. Impact of the door thereagainst will act toincreasingly distort the spiral so that the latter will gradually arrestthe door and neutralize all shocks and jars in so doing.

It will be seen that in both forms of `our invention we provide a foldedoverturned spring end to form a buffer.

The action of the retainer l2, in the form shown in Figs. 3 and 4 is thesame as in the preferred construction. Screw openings 13 may be providednear one end of the base 1l, and near the other end thereof we providemarginally disposed openings 15. In order to facilitate insertion of thescrews in openings l5 we preferably reduce `or cut away the retainer l2,as indicated at 16.

It is believed that the novelty and utility of our invention will befully understood from the foregoing description, and while we haveherein shown and described specific forms of our invention we do notwish to be limited thereto except for such limitations as the claims mayimport.

l. A door stop comprising a strip of spring metal having a base portionadapted to rest upon the floor and provided With a buifer formed bybending one end upwardly at an inclination to the vertical and towardthe door with respect tothe opening movement'thereof, the terminal ofysaid upwardly end finally abuts, substantially as described..

2. A. door stop comprising a strip of spring metal having a base portionadapted to rest upon the floor and provided with a bent up end bufferportion, the remaining end being bent to lie above and at an acute angleto the base portion for depression by the door when the same passesthereover, the terminal end portion of said remaining 'end being bentupon itself for spring compression by the door against the base portionwhereby an initial resistance is oered to the latter, substantially asdescribed.

In witness whereof we hereby affix our signatures in the presence of twosubscribing witnesses.

WILLIAM R. CONCIE. CHARLES SMITH.

llVitne'sses: V

H. C. Hown, WINFEL'D fBoEHMn.

plea n'f 'this patent iznq'rbe obtained for five cents each, byaddressing the Commissioner of llatexits,

Washington, ZD. C.

